121123030187 has 2 divisors, whose sum is σ = 121123030188. Its totient is φ = 121123030186.

The previous prime is 121123030181. The next prime is 121123030243. The reversal of 121123030187 is 781030321121.

It is a weak prime.

It is an emirp because it is prime and its reverse (781030321121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121123030187 - 2²⁰ = 121121981611 is a prime.

It is not a weakly prime, because it can be changed into another prime (121123030181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561515093 + 60561515094.

It is an arithmetic number, because the mean of its divisors is an integer number (60561515094).

Almost surely, 2^121123030187 is an apocalyptic number.

121123030187 is a deficient number, since it is larger than the sum of its proper divisors (1).

121123030187 is an equidigital number, since it uses as much as digits as its factorization.

121123030187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The spelling of 121123030187 in words is "one hundred twenty-one billion, one hundred twenty-three million, thirty thousand, one hundred eighty-seven".